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                探险计划                </h1>
                <p>时间限制：20s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：162MB</p>			</div>
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                                <h3>题目描述</h3><p>这一天,Hnsdfz信息组的众人决定上岳麓山玩.岳麓山上的可以探险的地方非常多,而信息组的Oier们給每一个地方都设定了一个危险值,代表探险这个景点需要承担的危险,而整个岳麓山可以抽象为由n行数字组成的数字梯形.而梯形顶端有m个数字,在每个数字处可以往左上或右上移动,形成一条从梯形底至顶的路径.
而一开始,每个人都觉得如果走过别人走过的地方就太没个性了.于是有
任务一: 找出m条完全不相交的至底至顶的路径.
但略一思考,又都觉得如果限定这么死,那就太无趣了,于是有:
任务二: 找出m条仅在数字处相交的路径.
现在,做为整个浏览计划的发起者,你要计算出对于任务一与任务二,每个人观赏线路所能经受的最小危险.
</p><hr/><h3>输入格式</h3><p>第一行两个正整数n,m.表示整个梯形有n行,第一行有m个列.
接下来n行描述整个数字梯形.第I行有n+I-1个数字.

</p><hr/><h3>输出格式</h3><p>分两行输出,分别是对应任务一与任务二的结果.
</p><hr/><h3>样例输入</h3><pre>3 2
1 2
2 1 2
2 2 2 2

</pre><hr/><h3>样例输出</h3><pre>10 
9

</pre><hr/><h3>提示</h3><p>样例解释
第I个数字表示每条路线在第I行走第几个数字.
任务一的两条路线 1 1 1;2 2 2;
任务二的两条路线 1 2 1;2 2 2;

数据范围
对于 10% 的数据 n<=10;  m<=5;
对于100% 的数据 n<=80;  m<=80; 每个数字<=20;

</p><hr/><h3>题目来源</h3><p>HNOI2009集训Day4</p>
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